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CENX — CENTURY ALUM CO

Reported value held$1.69B
Funds holding (latest)47
SectorIndustrials
Funds holding (Q2 2026)39
Institutional value$1.39B · 47.48M sh
New / Add / Cut / Exit4 / 24 / 9 / 3
Top-5 / Top-10 concentration59.8% / 74.1%
Institutional holdings change Accumulating +15.1% (+6.23M sh)
Institutional value change Down -12.8%

As of Q2 2026, 39 SEC-registered investment managers reported holding CENX (CENTURY ALUM CO) in their latest 13F filings, with a combined reported value of $1.39B across 47.48M shares. That is +15.1% by share count (+6.23M shares) versus the previous quarter, while reported value moved -12.8%. Ownership is concentrated: the five largest holders account for 59.8% of reported value and the top ten for 74.1%.

Compared with the prior quarter, 4 opened new positions, 24 added to existing stakes, 9 trimmed, 3 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

CENX is classified in the Industrials sector.

All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.

FundQuarterSharesValuePortfolio WeightChange
BlackRock Inc history Q2 2026 10.30M $474.13M 0.01% Add
Vanguard Group history Q4 2025 6.94M $271.90M 0.00% Add
Invesco Ltd history Q2 2026 2.42M $111.24M 0.01% Add
UBS Group AG history Q2 2026 2.02M $92.82M 0.01% Add
Geode Capital Management history Q2 2026 1.85M $84.99M 0.01% Add
Morgan Stanley history Q2 2026 1.51M $69.51M 0.00% Reduce
Millennium Management history Q2 2026 1.13M $51.84M 0.02% Reduce
Goldman Sachs Group history Q2 2026 1.05M $48.28M 0.00% Add
Balyasny Asset Management history Q2 2026 759.60K $34.95M 0.05% Add
D. E. Shaw & Co history Q2 2026 13.51M $33.40M 0.02% Hold
Northern Trust Corp history Q2 2026 682.08K $31.38M 0.00% Add
Citadel Advisors history Q2 2026 652.33K $30.01M 0.00% Reduce
Bank of America Corp history Q2 2026 602.23K $27.71M 0.00% Reduce
Charles Schwab Investment Management history Q2 2026 594.93K $27.37M 0.00% Add
Wellington Management Group history Q2 2026 548.90K $25.25M 0.01% Add
MFS Investment Management history Q2 2026 456.24K $22.29M 0.01% Add
Bridgewater Associates history Q2 2026 473.93K $21.81M 0.09% Reduce
BNY Mellon history Q2 2026 403.63K $18.57M 0.00% Add
Capital World Investors history Q2 2026 391.42K $18.01M 0.00% New
Point72 Asset Management history Q2 2026 373.36K $17.18M 0.02% Reduce

View all 47 fund holders →

New Positions (Q2 2026)

Fully Exited (vs previous quarter)

Fund Position History — shares by quarter (top 20 funds)

FundQ3 2021Q4 2021Q1 2022Q2 2022Q3 2022Q4 2022Q1 2023Q2 2023Q3 2023Q4 2023Q1 2024Q2 2024Q3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026
BlackRock Inc — — — — — — — — — — — — 10.74M 10.50M 9.89M 10.16M 10.13M 9.48M 9.01M 10.30M
Invesco Ltd 584.67K 1.33M 205.74K 551.04K 402.23K 1.05M 1.04M 2.80M 2.78M 3.09M 2.37M 2.11M 2.23M 1.91M 935.84K 537.47K 849.52K 629.41K 2.08M 2.42M
UBS Group AG 6.85K 109.79K 121.56K 57.44K 14.21K 18.94K 71.82K 6.17K 6.65K 42.07K 39.49K 1.29M 1.31M 1.64M 1.60M 1.69M 1.87M 2.55M 1.74M 2.02M
Geode Capital Management 903.27K 950.63K 971.84K 951.39K 975.48K 969.25K 1.02M 1.05M 1.09M 1.17M 1.18M 1.27M 1.28M 1.28M 1.29M 1.30M 1.32M 1.32M 1.54M 1.85M
Morgan Stanley 1.03M 996.57K 1.24M 1.64M 1.34M 1.24M 1.12M 964.19K 1.01M 1.28M 1.60M 1.16M 1.52M 1.01M 1.14M 847.97K 1.43M 1.61M 1.59M 1.51M
Millennium Management 630.85K 84.95K 234.70K 1.34M 137.63K 65.42K 33.25K 26.28K 493.92K 708.29K 1.29M 244.36K 105.54K 457.73K 33.80K 512.52K 442.67K 1.43M 1.99M 1.13M
Goldman Sachs Group 351.10K 409.68K 181.67K 465.88K 323.60K 477.33K 526.06K 425.78K 533.96K 335.12K 216.92K 617.30K 517.97K 414.27K 379.35K 224.71K 550.10K 665.70K 379.15K 1.05M
Balyasny Asset Management — 177.49K 100.00K 187.95K 193.08K 382.14K 292.34K 109.97K 252.50K 1.05M 251.36K 793.06K 211.47K 460.80K 178.94K 247.11K — 100.00K 95.07K 759.60K
D. E. Shaw & Co 69.28K 162.80K 46.40K 46.40K 349.61K 843.24K 404.55K 268.34K 336.79K 243.48K 50.51K 191.00K 98.46K 171.83K 28.38K 268.67K 201.59K 13.51M 13.51M 13.51M
Northern Trust Corp 537.82K 523.83K 510.86K 517.21K 516.01K 515.46K 532.76K 540.78K 533.06K 537.27K 527.23K 509.47K 511.05K 540.45K 526.64K 508.36K 518.16K 521.76K 548.74K 682.08K
Citadel Advisors 613.07K 1.20M 515.65K 1.30M 1.47M 25.32M 14.47M 14.47M 13.39M 11.39M 230.27K 276.73K 187.93K 490.53K 2.34M 2.21M 1.70M 952.02K 1.69M 652.33K
Bank of America Corp 982.92K 634.48K 601.69K 1.21M 346.45K 340.27K 642.97K 607.06K 859.88K 621.25K 764.60K 920.20K 813.26K 745.99K 677.52K 1.72M 584.93K 307.53K 608.79K 602.23K
Charles Schwab Investment Management 598.64K 599.74K 595.96K 606.70K 637.28K 671.18K 737.01K 776.07K 801.55K 850.18K 463.52K 477.29K 487.39K 539.16K 537.73K 551.58K 542.29K 535.92K 544.51K 594.93K
Wellington Management Group 111.78K 28.73K 247.73K 164.30K 164.30K 168.52K 167.13K 164.36K 164.51K 169.57K 426.09K 414.76K 409.23K 411.59K 693.75K 981.60K 194.09K 197.84K 378.45K 548.90K
MFS Investment Management — — — — — — — — — — — — — — — — — — 12.50K 456.24K
Bridgewater Associates — — — — — — — — — 98.25K 146.44K 74.50K 247.40K 431.28K 73.51K — — 271.80K 732.52K 473.93K
BNY Mellon 503.44K 498.06K 516.25K 462.36K 454.11K 508.40K 488.35K 483.81K 448.80K 370.59K 365.16K 366.80K 327.92K 347.05K 343.04K 343.58K 336.88K 335.40K 335.86K 403.63K
Capital World Investors — — — — — — — — — — — — — — — — — — — 391.42K
Point72 Asset Management — — — — — — 9.78K — 12.00K 20.20K 6.80K — 52.80K — — — — 196.71K 659.55K 373.36K
Royce & Associates 824.34K 784.34K 584.84K 454.84K 465.44K 457.34K 480.54K 420.54K — — — — — — — — 148.46K 314.29K 264.34K 372.04K

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